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Why is a rotating field system used in preference toa stationary field?
If you are asking why most a.c. generators (alternators) use a rotating field, rather than a rotating armature, then the answer is that a rotating armature would require slip rings to carry huge currents and be insulated for high voltages, which is not practicable.
What does a Rotating magnetic field do?
The Field which is continuously rotating with a particular axis is known as rotating magnetic field. It will be created in Three phase induction motor's stator. When the supply is given to stator of three induction motor, the flux of each phases (that are displaced by 120 degrees) will interact. Due to this the resultant Field will be rotating Magnetic Field will be Produced.
What is the main purpose of a single phase capacitor start induction ac motor?
A single-phase induction motor can run either way depending on how it's started because the stator field does not rotate. The starting winding, fed by a capacitor to produce a phase-advanced current, generates a small rotating field to start the motor going in the right direction. Once the motor has run up to speed it latches on to the main stator field, which can be resolved into two oppositely-rotating fields. The armature produces torque from only one of the rotating components.
What is cross field principle?
A seperately excitd 2pole dc generator consitstng of many cnoductors rotating in magneti2 field producd by field coils with no load connected to it
How does an auxiliary winding provide a starting torque for single-phase induction motors?
Single- and three-phase motors work on the sameprinciple. The field windings create a rotating field which cuts the rotor bars of the rotor, inducing voltages into them, and the field produced by the resulting currents react with the rotating field causing the rotor to spin. If you like, the rotating field 'drags' the rotor around with it.In the case of a three-phase motor, the three out-of-phase phase currents create a naturally-rotating field. However, in the case of a single-phase motor, we must simulate this. This is done by having two, separate, field windings. One is fed directly from the supply, and the other is also fed from the supply via a capacitor. This results in two field currents which are displaced from each other by around 90 electrical degrees, when then create the rotating field necessary for the motor to start and run. You could say that a single-phase motor is equivalent to a 'two-phase' motor. The field winding supplied via a capacitor is known as the 'start winding' or the 'auxiliary winding'.
Who invented the Rotating field system?
I don't think anyone invented it, but the one who started it was Lord John Townsend from Brittan.
Why is a rotating field system used in preference toa stationary field?
If you are asking why most a.c. generators (alternators) use a rotating field, rather than a rotating armature, then the answer is that a rotating armature would require slip rings to carry huge currents and be insulated for high voltages, which is not practicable.
Who was the man who started the rotation field system?
I beleive Jethro Tull started the rotation field system.
What will happen if the earth started rotating faster?
It would effect the earth's electromagnetic field as it is the spinning of the earth's core that creates the field.
What crop restored fertility to the soil in the three-field system of rotating crops?
Legume
Name the types of alternators based on their rotor construction?
1) Rotating armature alternator, rotates in stationary magnetic field. 2) Rotating field alternator, the magnetic field is rotating.
Is there any rotating magnetic field in dc motors?
yeah ,if we consider a 3 phase dc motor ,the rotating magnetic field is produced by rotating the permanent magnet with a constant speed.
What does a Rotating magnetic field do?
The Field which is continuously rotating with a particular axis is known as rotating magnetic field. It will be created in Three phase induction motor's stator. When the supply is given to stator of three induction motor, the flux of each phases (that are displaced by 120 degrees) will interact. Due to this the resultant Field will be rotating Magnetic Field will be Produced.
What is the fastest rotating body in the solar system?
The fastest rotating planet is Jupiter.
What planet is fastest-rotating planet?
Jupiter is the fastest rotating planet int he solar system.
What are four things Nikola Tesla Invented?
Here is one: In 1882, Serbian inventor Nikola Tesla identified the rotating magnetic induction field principle used in alternators and pioneered the use of this rotating and inducting electromagnetic field force to generate torque in rotating machines. An AC motor is an electric motor that is driven by an alternating current. It consists of two basic parts, an outside stationary stator having coils supplied with alternating current to produce a rotating magnetic field, and an inside rotor attached to the output shaft that is given a torque by the rotating field.
What is the main purpose of a single phase capacitor start induction ac motor?
A single-phase induction motor can run either way depending on how it's started because the stator field does not rotate. The starting winding, fed by a capacitor to produce a phase-advanced current, generates a small rotating field to start the motor going in the right direction. Once the motor has run up to speed it latches on to the main stator field, which can be resolved into two oppositely-rotating fields. The armature produces torque from only one of the rotating components.
